Some of the words are very simple .The man uses them.合并为一句：Some of the words ----- ------ ------ -------- are very simple.
问题描述：
Some of the words are very simple .The man uses them.
合并为一句：Some of the words ----- ------ ------ -------- are very simple.
答
that the man uses
祝你学习进步
答
Some of the words (that/which/省略 the man uses) are very simple
答
Some of the words that the man uses are very simple. 定语从句
答
which the man uses.....
答
Some of the words (that the man uses) are very simple.
(that the man uses) 是定语从句,修饰Some of the words .
句意:那个人使用的一些单词非常简单.